Marvin is a rather tall man with chestnut mid-length hair that cover his right eye and a short ponytail. He is typically seen smoking the cigarette. He had sideburns and a very thin moustache.
Marvin seems to be of the taciturn type.
Originally from the South America Branch, he was promoted and transfered to the European Branch.
Destruction of the Black Order Attempt arc
Marvin is seen witnessing the ravages of Komurin. When Lenalee finally defeats it, he encourages her and he welcomes back Allen when he awakes with the others.
Suman Dark's fall Arc
Marvin is seen with his coworkers when they talk with Komui about Suman's case. He doesn't say a word when Johnny talks about his relationship with Suman.
The Vampire of the old Castle Arc
Marvin has a dubitative look when Komui talks about finders who were the prey of the vampire.
Order in Crisis Arc
He is seen with a shocked face aknowledging the death of the many black order members. He follows his section chief regarding his attitude towards their fallen comrades.
Edo and Asian Branch arc
Noah's ark arc
Marvin is present with everyone to welcome back the exorcists after they escape the ark. 
Invasion of the Black Order Arc
Marvin is present in the room when Lulubell attacks. He manages to escape and to hide Reever, Rob Neal and a few other members. He is seen safe after the battle against the level 3. He is then wounded at the birth of the level 4 . He is revealed to have been protected by general Tiedoll once the level 4 is destroyed.
|The Black Order|
|Exorcists:||Allen Walker • Yu Kanda • Lenalee Lee • Lavi • Bookman • Miranda Lotto • Arystar Krory III • Noise Marie • Chaozii Han • Timothy Hearst • Suman Dark • Daisya Barry •Chalker Laboun •Kazaana Reed • Hevlaska • Maria • Cross Marian • Froi Tiedoll • Klaud Nine • Winters Socalo • Kevin Yeegar|
|Third Exorcists:||Kiredori • Goushi • Madarao • Tokusa • Tewaku|
|Executives:||Komui Lee • Bak Chang • Renny Epstain • Andrew Nansen • Louis Fermi • Malcolm C. Lvellie • Sammo Han Won • Bridget Faye • Bak Chang •|
|Personnel:||Reever Wenhamm • Johnny Gill • Tup Dop • Number 65 • Rob Neal • Marvin Huskin • Jeryy • The Gatekeeper • For • Rohfa • Rikei • Shifu • Legory Peck • Mark Burroughs • Howard Link • Head Nurse • Cash Dop • Gigi Lujun • Finders|
|Branches:||European Branch • Asian Branch • North American Branch|
|Other:||Innocence • Apocryphos • Noah's Ark • CROW • Second Exorcist Program • Third Exorcist Program • Fallen One • Komlin • Golem • Inventions and Technology|